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Kriptografi İşler ve Yarışmalar

Cryptography is the study of hiding information. It intersects the disciplines of engineering, computer science and mathematics. Cryptography is involved in securing passwords, access to sensitive material and to computer systems. If your business needs help with cryptography, you can hire freelance cryptography experts to fulfill your tasks. Start by posting your cryptography task today!

We need a set of several articles having a common theme - cryptocurrencies:
- Why to choose a Hardware wallet and a comparison between the most popular
- What is a Portfolio Management Software (Order Management System) and why we need one
- Basic concepts in cryptocurrencies (blockchain, cryptocurrencies, wallets, addresses, transactions)
- Differences between Bitcoin, Ethereum, Ripple etc
-...

I want simple ethereum web wallet and also send and receive function
it should be simple web based app where new user signs up and he will have unique eth address for his account and with that eth add if he has balance can send eth or can receive eth to that address

this project is to create a tool to decrypt this information:
253113006145063043134018129099033108045194015176 main key
DF46452FCE37AB02 key A
B3FE5245761626CE key B
4462913297480912 16276775:953>748
4580110730686018 ?1<0569=1;>3;:20
where the result of that should give the following:
4462913297480912 042558FFFFFFFFFF
4580110730686018 043304FFFFFFFFFF
I had an applic...

I am looking for a NOMP ([url kaldırıldı, görüntülemek için giriş yapın]) cryptocurrency mining pool to be setup that will support the Equihash algo. Specifically this pool should work for ZCASH. Also a major requirement for the pool is that it use the MPOS ([url kaldırıldı, görüntülemek için giriş yapın]) front end. If you haven't built pools be...

Customized PoW/PoS with masternodes blockchain .
PoW untill some block.. Algorithm should be used ASCII resistant and new algorithm with new tech
Custom PoS - Leasing Proof of Stake, Waves have implemented this.
We are not creating a wheel here, I`m looking for someone who can take tech and merge it, customize.
Lets chat about features, details and milestones.

I want to build my own blockchain based on NEO PROTOCOL.
Requires a VERY strong development team to build a crypto virtual banking services blockchain similar to crypterium. io
I need a team that can build everything from ZERO.

I want to build my own blockchain.
Requires a VERY strong development team to build a crypto virtual banking services similar to crypterium. io
I need a team that can build everything from scratch/ground up; web, app, ICO, token, wallet, blockchain, maintenance, security, etc etc.
Budget: USD$ 70,000 and development period: 4 months.

Chronicled is the untouched leader in supply chain solutions by leveraging block-chain. We want to be at the top. We want to hire someone who is experienced in cryptography as well as software applications. Knowing a thing or two about Chronicled platform will be given preference. Please visit [url kaldırıldı, görüntülemek için giriş yapın] to know their business model before...

Chronicled is the industry leader in supply chain solutions by leveraging block-chain. We want to emulate their success. We are looking for someone who knows about coding like the back of his hand. Preference will be given to those who are familiar with the Chronicled outlay. Do visit [url kaldırıldı, görüntülemek için giriş yapın] to know their business model before applying...

I would like you to create a website which allows users to create their own crowdfunding campaigns and a cryptocurrency as well. Users can fund their businesses by selling equity, stock or their own crypto to fund their [url kaldırıldı, görüntülemek için giriş yapın] would mean that real time data would have to be displayed about the stock value and the company progress, so b...

For a publication library Win32 app, I am looking to extract data from its proprietary and undocumented file format.
* It is multilingual and precedes Unicode, most likely compressed.
* The individual documents are search indexed (indices in separate files).
* They are sorted into a hierarchy: Publication (file-level) > Chapter > Content.
* Some publications are magazines, their hierarchy i...

Chronicled is the industry leader in supply chain solutions by leveraging blockchain. We want to emulate their success. We are looking for someone who knows about coding like the back of his hand. Preference will be given to those who are familiar with the Chronicled outlay. Do visit [url kaldırıldı, görüntülemek için giriş yapın] to know their business model before applying ...

We are looking for someone that is able to create a new POS/POW coin.
We have around a 7 days deadline
We have the the original code we want to fork from. But need a few changes and also the wallets and block explorer creation.
Let us know your past experience in this area and how quick you are able to do this.
Thank you

Hi
I'm looking for someone to make this mobile application:
People can only deposit a specific cryptocurrency on the wallet (more info in pm)
The wallet stores the cryptocurrency
The one using the app can also pay, but when paying it converts the cryptocurrency into other cryptocurrency (for example: you convert it to Ripple or Litecoin because the shop only accepts those cryptos)
It wor...

A certain well know market place hide email addresses from sellers replacing a customers real email address with a hashed value. For example a real customer email address of [url kaldırıldı, görüntülemek için giriş yapın]@[url kaldırıldı, görüntülemek için giriş yapın] is shown as abc123xyz987@marketplace.com. I have obtained a large number of about 400 ...

I have requirements of an exchange website which is purely based in erc20 tokens exchanges
[url kaldırıldı, görüntülemek için giriş yapın]
I want to start with top 25 tokens now.
Can you create this type of exchange or can edit your current exchange to something like this .. it is more easier... because it works on one blockchain which is ethereum only.

1 Days work for an expert.
Please DO NOT post a generic / Auto responser / copy & paste “contact me” / "we have 10 developers". Do Respond to 'specific points' in the Requirement Specification below in order to be considered. This is a 1st test project and there will be more work afterwards IF successful.
PLEASE only apply when you meet the following requi...

ERC20 Token and minable coins like BTC, LTC and others
Reference: [url kaldırıldı, görüntülemek için giriş yapın]
Also be able to add and remove erc20 token.
Implementation like IP stuff, when a user long in with different IP, google 2fa etc
Questions:--
1. How do you plan to secured investors fund?
2. How can we plan to safe the website from hackers?
3. how t...

I'm going to make a coin exchange.
Development of electronic wallet without security problems.
You need to develop your own api.
[url kaldırıldı, görüntülemek için giriş yapın]
You need to create a web site with similar but high quality, original designs and features.
Developers buy everything including paid themes / APIs / plugins and make everything.
★There...

This is for an upcoming ICO Project, and we are seeking for a team who can walk with us from the initial to the final stage. Previous experience in Smart Contract Development on Ethereum is a must. Your token development skills should be top-notched, as anyone can practically make their own token using readily available resources online. Usage of ready-made templates online (without improvement...

We are looking for extensive crypto coin developer for developing our coin. Fix date is 25th Feb so need before that and more detail on freelancer chat.
Please only bid if you have rapid solution with demo.
Thank you!

I am looking for a Chief Technology Officer (CTO) to monitor our Blockchain Technology and Digital Bank softwares development and oversee my team.
QUALIFICATIONS:
- You must be highly knowledgeable about all coding and modern programming languages
- You must be very proficient in Blockchain Technology and Cryptocurrency system
- You must be a team leader
- You must be available almost roun...

I want to hire freelancers those have fully/unlimited/widely knowledge about cryptocurrency, transactions, transactions fees, litecoin, Bitcoin.. Don't bid if you not have any knowledge about it and cannot write to the point Article, Article should relevant to the topic that I'll provide, experience freelancers recommended.
if you are a timewaster then do not bid, if i will fin...

I want to hire freelancers those have fully/unlimited/widely knowledge about cryptocurrency, transactions, transactions fees, litecoin, Bitcoin.. Don't bid if you not have any knowledge about it and cannot write to the point Article, Article should relevant to the topic that I'll provide, experience freelancers recommended.
if you are a timewaster then do not bid, if i will fin...

I want to hire freelancers those have fully/unlimited/widely knowledge about cryptocurrency, transactions, transactions fees, litecoin, Bitcoin.. Don't bid if you not have any knowledge about it and cannot write to the point Article, Article should relevant to the topic that I'll provide, experience freelancers recommended.
if you are a timewaster then do not bid, if i will find ...

I have proposed a Simplified AES that is tested experimentally and compared against multiple cipher. I wish to extend the analysis by providing additional analysis based using the following techniques.
- Differential and linear cryptanalysis
- Algebraic attacks
- Key schedule attacks
- Etc ..
This will include writing the text that describe each in details.

Hi,
We propose to do following:
- Launch Crowdsale/ICO [Use smart contract to close campaign when target funds are received].
We are looking for someone who can help us about launch ICO. We want complete knowledge regarding ICO sale. We have previous experience regarding cryptocurrency coin development but now we want complete guidance and help regarding ICO sale.
We need a talented te...